<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div class="contaiiner">
    <h2 class="page-header"></h2>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
</div>
<script>

</script>
</body>
</html>